CEFASe64c8df1-96bd-4671-bb33-0caec45b93e2 English dataset Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk pointOfContact 2019-10-29T10:09:34 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 Sustainable razor clam fishery 2013/14 - Fisheries Science Partnership FSP Sustainable razor clam fishery 2017-01-20 publication 2019-10-29 revision 2017-01-11 creation CEFAS18324 https://data.cefas.co.uk The fishing vessel *Harmoni *(MR7) was chartered to carry out experimental electro-fishing for razor clams. The aim of the survey was to establish whether a commercial fishery with this gear was viable commercially and environmentally sustainable. There was initially a period of gear design and construction which, together with some unavailability of either the vessel of Cefas staff, delayed the project until the winter of 2013/14. The weather was exceptionally poor and delayed the start of work such that funding had to be carried forward into the next financial year. Fieldwork commenced in May at a site off Southport, but despite the experimental gear deploying and working as envisaged, no razor clams were caught. It was decided that a new fishing area should be tried and at the suggestion of the skipper, a diving company was engaged to survey positions where catches had been made previously. One position was found to have a significant density of razor clams and this was chosen as a target for the next trip. Unfortunately this position was in too shallow water for *Harmoni *to reach and deploying the gear a short distance to seaward produced no catch. After further tows through the area which also proved barren, the project was abandoned. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk originator Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk custodian Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk distributor Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) data.manager@cefas.co.uk owner Department for Environment, Food and Rural Affairs (DEFRA) defra.helpline@defra.gov.uk owner notPlanned Fish behaviour SeaDataNet P02 parameter discovery vocabulary 2011-03-25 revision Biota abundance, biomass and diversity SeaDataNet P03 parameter discovery vocabulary 2011-03-25 revision Species distribution GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Water column SeaVoX Vertical Co-ordinate Coverages 2010-05-18 revision Marine Environmental Data and Information Network MEDIN metadata record availability 2012-01-11 publication data.gov.uk MEDIN metadata record availability 2012-01-11 publication otherRestrictions noLimitations otherRestrictions Adherance to the Cefas Data access policy required. Terms and conditions of OGL – Open Government Licence apply. `http://www.nationalarchives.gov.uk/doc/open-government-licence/`_ .. _`http://www.nationalarchives.gov.uk/doc/open-government-licence/`: http://www.nationalarchives.gov.uk/doc/open-government-licence/ English biota -6.00 -3.00 53.25 55.50 2014-05-18 2015-02-28 Binary Unknown https://data.cefas.co.uk/view/18324 Cefas Data Portal download The Cefas Data Portal contains metadata records and data sets available to download and connect to in support of our commitment to open science. Data is available in the following formats: Binary download. dataset INSPIRE Data Specification on Species Distribution – Technical Guidelines 2013-12-10 publication false See the referenced specification Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication true See the referenced specification Methods The gear The razor clams respond to electrical pulses by vacating their burrows allowing them to be collected by the cage. The aim was to optimise the towing speed, voltage, pulse frequency and the angle of the blade at the front of the collection cage both in terms of the catching efficiency of the gear for the target species and minimising environmental impact. A camera was to be deployed on the collection cage to monitor the action of the sledge on the seabed and observe the reaction of benthic organisms to the electric pulses. MEDIN 3.1.1